baber/WOPTO huggingface dataset:
Patent GB-569046-A (GB)
Title: Method and apparatus for improving optical elements
IPC: G01M11/00
Filed: 1942-12-16
Abstract: 569,046. Optical elements. TWYMAN, F., and STERNBERG, R. S. Dec. 16, 1942, No. 17905. [Class 97 (i)] Improvement of optical elements to correct for defects in the emergent wave front, as determined by interferometric means, are effected by adding transparent material, such as silica, cryolite, or fluorite, to parts of a surface of the element while other parts are masked in accordance with the results of the interferometer test ; the transparent material, may be deposited by sublimation in an apparatus. incorporating interferometric observation apparatus. The element may be a prism, lens, or mirror, and examination for determination of defects may be made by a Twyman and Green interferometer as described in Specifications 103,832, 130,224 and 213,674, [all in Class 97 (i)]. Deposition may be effected by sublimation in vacuo, as described in Specifications 538,272, 538,273, &c., under the control of masks prepared in accordance with the patterns obtained by the interferometric test. If the element is not a solid of revolution, the masks are cut to the shapes of the different " contour lines " of the pattern, and are used successively to enable a greater deposition to be made in the " lower " zones. Fig. 4 shows apparatus, for a lens or other solid of revolution, comprising an evacuated casing 12, a heating element 14 for subliming the material, and a holder 18 for a lens 15 above an aperture 16 in a partition 13. The holder 18 is rotated over a mask 17 by a rotatable magnet outside the casing, and is connected by a pulley 33 and belt 32 to a rotatable holder 30 for a mask 29, similar to the mask 17, located in front of a stationary concave mirror 21. The mirror 21 is an element in an interferometer system, comprising also a similar mirror 26, a window 22 and its compensating plate 25, and a transmitting reflector 23 and its compensating plate 24. Each mask has an aperture shaped in accordance with the initial interferometric test, and the mirror 21 and lens 15 are so placed that deposition occurs on them at equal rates, interferometric observation being made of the deposit on the mirror 21, and deposition being stopped when the observed pattern resembles that obtained by the initial test on the lens. Simplified apparatus is described, in which the deposit on a wedge-shaped glass plate, replacing the mirror 21 and mask 29, is observed by an " interferoscope." For the correction of a concave mirror, the mirror replaces the mirror 21 and observation is made directly thereon.
Patent GB-685516-A (GB)
Title: Improvements relating to the barrels of firearms
IPC: F41A21/18
Filed: 1951-07-30
Abstract: 685,516. Ordnance. AKTIEBOLAGET BOFORS. Julv 30, 1951 [July 31, 1950], No. 17962/51. Class 92(ii) The calibre of a rifled gun barrel 1 is constant from the commencement of the rifling to the muzzle, and the diameter of the rifling from the commencement of the rifling, or from a point along the rifling to the muzzle decreases progressively. By this means the wear of the part of the projectile in contact with the rifling is compensated for and contact is always obtained between that part of the projectile and the rifling. The decrease in diameter of the rifling may be uniform along the length of the barrel. In the barrel shown the diameter of the rifling is constant between the points B and C and then decreases progressively to the point D at. the muzzle.
Patent GB-1183605-A (GB)
Title: Process for the manufacture of Endless Sections from a Crystallizable Polyolefine
IPC: C08K5/00
Filed: 1967-04-19
Abstract: 1,183,605. Polyolefin articles. STAMICARBON N.V. 1.9 April, 1967 [20 April, 1966], No. 18000/67. Heading C3P. Continuous non-round sections are moulded from crystalline polyolefins having a warpage factor of less than 0.65 or whose warpage factor is controlled to such level by a warpage factor controlling compound. The polyolefin may be a polymer or copolymer of ethylene, propylene, butene, isobutene, pentene or 4- methylpentene-1, optionally with other monomers, e.g. acrylic and alkacrylic acids, salts and esters. The warpage factor may be controlled by adding a minor proportion of an inorganic or organic substance, particularly an organic pigment. Compositions of polyethylene and various pigments are described, and sections suitable for sealing strips, door fillets and window frames may be produced.
Patent GB-1316444-A (GB)
Title: Flexible roof covering material and method of producing the same
IPC: E04D5/12
Filed: 1970-04-15
Abstract: 1316444 Roofing material JENS VILLADSENS FABRIKER AS 15 April 1970 [16 April 1969] 18007/70 Heading B2E A flexible roof covering material having a granular surface comprises at least one layer of a thermoplastics material wherein the granular surface is formed by granules comprising a thermoplastics material which is miscible with the said layer and fused thereto, the granules being so disposed over the surface of the layer so that water is readily drained between them. The granules and layer are preferably of the same composition, e.g. polyvinyl chloride or polyvinyl alcohol. The granules may be alike or different with sizes between 0.3 and 4.0 mm and may be of flat or slaty form. The thermoplastic layer may be a self supporting foil or may be attached to carrier, e.g. asbestos paper impregnated with synthetic rubber or be reinforced with a woven or non- woven fibres, e.g. glass. In the Examples (1) PVC paste is sprayed onto an endless steel belt, a glass mat is laid on the paste which is then gelled at 180‹C, PVC paste is spread thereon and while still soft, PVC granules are dropped onto the surface before final gelling: (2) PVC paste is spread onto an asbestos felt (80% asbestos, 20% butadiene/styrene rubber) and granules of softened PVC are applied followed by gelling, (3) PVC paste is spread onto a glass tissue, gelled at 190%C and cooled and a further coating of paste is applied and granules are dropped into it before gelling at 200‹C, (4) bitumen impregnated asbestos paper is coated with a polyvinyl chloride-polyvinyl alcohol dispersion heated to 90‹C and then cooled, this material then being coated as in Example (2). The PVC pastes may contain pigments, e.g. lamp black, stabilisers and plasticisers and the granules may be coloured.
Patent GB-120727-A (GB)
Title: Improvements in or relating to Articles Made of Reinforced Paper or the like.
Inventor: POETSCHKE PAUL
IPC: B65D3/22
Filed: 1918-11-05
Abstract: 120,727. Poetschke, P. Nov. 5, 1917, [Convention date]. Boards and compound paper; paper, treating with special materials. -Containers &c. are formed of two or more layers 2, 7, 4 of paper or fibrous material secured together by cement 3, which stiffens the material and renders it waterproof. The cement, which may be hardened by applying heat, is formed by mixing together magnesium oxide and silica and then adding a solution of magnesium chloride of density 30‹ BÚ. One or more of the inner layers of paper &c. may be perforated, the cement filling the perforations. The compound material may be coated on one or both surfaces with paraffin wax, resin, shellac, &c. or with mixtures of these materials. The Specification as open to inspection under Sect. 91 (3) (a) states that. the compound material may be manufactured in sheet form. This subject-matter does not appear in the Specification as accepted.
Patent GB-595757-A (GB)
Title: Improvements in process for making styrene
IPC: B01J21/06
Filed: 1944-09-23
Abstract: A catalyst for the dehydration of phenyl methyl carbinol consists of titania, preferably of a high grade of purity, which may be supported on sandstone, silica, fused alumina, and the like.  Thus, it may first be activated with sulphuric acid, and applied dry in an amount of 10-15 per cent. by weight, to ceramically-bonded fused alumina wetted with water, and the product dried at 150 DEG C. Alternatively, pure titania is made into a paste with water, dried at 130-150 DEG C. powdered, and pelleted, for example to 3/16 -\ba3/8 inch size, and fired at 800 DEG C. or above, preferably 1000 DEG C. The pellets may then be activated with nitric, hydrochloric, phosphoric or sulphuric acid, washed, and dried.  The Specification as open to inspection under Sect. 91 comprises also the use of potassium bisulphate as the catalyst, supported as above described. This subject-matter does not appear in the Specification as accepted.ALSO:Styrene is prepared by vapour phase dehydration of phenyl methyl carbinol using titania as catalyst.  Temperature is 180-280 DEG , preferably 220-250 DEG  C.  At 180-220 DEG  C. steam or reduced pressure may be used to assist vaporization.  The titania, preferably of a high grade of purity, may be supported on sandstone, silica, fused alumina and the like.  Thus, it may first be activated with sulphuric acid, and applied dry, in an amount of 10-15 per cent by weight, to ceramically-bonded fused alumina wetted with water, and the product dried at 150 DEG  C. Alternatively, pure titania is made into a paste with water, dried at 130-150 DEG  C., powdered and pelleted, for example to 3/16 -\ba3/8 inch size, and fired at 800 DEG C. or above, preferably 1000 DEG  C.  The pellets may then be activated with nitric, hydrochloric, phosphoric or sulphuric acid, washed and dried.  Crude phenyl methyl carbinol obtained by hydrogenating acetophenone and containing the latter may be treated. In examples, supported or pelleted titania catalysts prepared as above are used.  The Specification as open to inspection under Sect. 91 comprises also the use of potassium bisulphate as the catalyst, preferably at 215-230 DEG  C. and supported as above described.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1139334-A (GB)
Title: An electric shock control device
Inventor: ARULANANDASAMI JOSEPH STEPHEN
IPC: H02H3/33
Filed: 1966-04-26
Abstract: 1,139,334. Protective arrangements. SICCO ELECTRIC SHOCK CONTROL DEVICE PRIVATE Ltd. 26 April, 1966, No. 18193/66. Heading H2K. A sensitive earth leakage protective arrangement comprises a differential current transformer having primary windings 1, 2 in the supply lines P, N and a secondary winding 5 connected to an amplifier A which controls the operation of a relay having normally-closed contacts 3, 4 in the supply lines P, N. The amplifier A is supplied with power through a switch S, a transformer T and a rectifier R from the supply lines. When earth leakage occurs, e.g. due to a person touching a live conductor, current induced in the secondary winding 5 causes the amplifier A to operate a relay 6 which closes contacts 7 to energize the relay coil 8 to open the contacts 3, 4. The opening of these contacts de-energizes the coil 8 but the contacts are held open by a permanent magnet M until manually reset. The arrangement is provided with radio frequency chokes F1 . . . F4, a test switch S2 and a push-button switch S1 connected across the output of the amplifier. The switch S1 may be closed to prevent incorrect operation of the relay 6 due to arcing when the contacts 3, 4 are initially closed. A neon indicator lamp N is provided and a voltage limiting neon discharge device may be connected across the secondary winding 5. In a modified arrangement, the relay 6, 7 is omitted and the amplifier directly supplies the coil 8 through a diode. In this case resetting is effected on the operation of a switch which permits current to flow through the coil 8 and a further diode in the reverse direction, Figs. 3 and 4 (not shown).
Patent GB-1363321-A (GB)
Title: Preparation of thiourea from cynamide
Filed: 1972-04-20
Abstract: 1363321 Thiourea AKZO NV 20 April 1972 [22 April 1971] 18275/72 Heading C2C Thiourea is produced by treating an aqueous cyanamide solution with H 2 S at elevated temperature and superatmospheric pressure (e.g. at 60-100‹ C. and 3-20 excess atmospheres) and in the presence of a catalyst which is active charcoal. The reaction velocity is also increased by the presence of elementary sulphur or of polysulphide.
Patent GB-109367-A (GB)
Title: Improvements in or relating to Driving-arrangements of Electric Motors.
Inventor: JONES GEORGE
IPC: H02K7/10
Filed: 1916-12-21
Abstract: 109,367. Jones, G. Dec. 21, 1916. Motors, gearing for.-The rotating armature j, Fig. 1, of a motor is mounted on a sleeve i surrounding a fixed shaft a; the sleeve i carries a pinion k which meshes with an idle pinion l, causing the latter to drive the inside teeth m of an outer driving pulley d. The field magnets h are carried by a stationary frame f. The pulley d may carry also a chain-wheel c. The motor is particularly applicable for driving the belting of conveyers of the kind described in Specification 102,831. [Class 78 (i), Conveyers &c.], the pulley d, Fig. 2, being arranged within the frame and the chain wheel e being employed to drive clutch-mechanism.
Patent GB-1260510-A (GB)
Title: Machine for spinning filaments
Inventor: PONOMAREV OLEG VASILIEVICH
IPC: D01D7/00
Filed: 1969-04-10
Abstract: 1,260,510. Filament-spinning and yarnwinding apparatus. SPETSIALNOE KONSTRUKTORSKO - TEKHNOLOGICHESKOE BJURO MASHIN KHIMICHESKIKH VOLOKON. 10 April, 1969, No. 18355/69. Heading B5B. [Also in Divisions D1 and F2] A machine for spinning synthetic filaments from molten polymeric materials, wherein filaments 4 are forwarded from a plurality of spinning devices 2 through cooling chambers 10 and then gathered into yarns by guiding tubes 13, the resultant yarns being passed on to a yarn winding device 5, includes the following features; the spinning devices 2 are arranged in a circle; the yarn winding device 5 includes a plurality of rotary bobbins 15 arranged in a circle; each bobbin 15 co-operates with one yarn spreading and guiding device 16; the number of bobbins is equal to the number of yarns to be wound plus at least one; the bobbins are equally angularly spaced around the circle; and the yarn winding device 5 is mounted for rotation through angular steps equal to the bobbin spacing, this rotation being performed after all the yarns have been rethreaded, each on to a corresponding bobbin. When all the bobbins except for the spare empty bobbin 15<SP>1</SP> are full, the yarn previously wound on the bobbin to the left of bobbin 15<SP>1</SP> is rethreaded on to bobbin 15<SP>1</SP>, that full bobbin is replaced by an empty one, and all the yarns are similarly rethreaded in succession round the circle until the new spare empty bobbin is the one to the right of 15<SP>1</SP>. The yarn winding device 5 is then rotated by a Geneva cross-mechanism (Fig. 3, not shown) to the left through an angle equal to one bobbin spacing, so that the new spare empty bobbin is in the same position as the original one. The cooling chambers 10 are supplied with streams of air.
Patent GB-1090951-A (GB)
Title: Improvements in neckties
IPC: A41D25/00
Filed: 1963-05-09
Abstract: 1,090,951. Neckties. H. TATE. Aug. 7, 1964 [May 9, 1963], No. 18396/63. Heading A3V. A necktie is made from a blank of textile material bonded to a foam plastics backing by forming creases 1 and 2 in the foam layer with a heated tool, folding back the outer portions 4 and 5 about the creases 1 and 2 and sewing their longitudinal edges 6 and 7 together at 15 to form a tube with the foam layer outermost. The end 9 is sewn across and drawn through the tube to turn it right side out. The end 10 is either hand finished then or has a facing secured to its inner side before the tube is turned and is left open.
Patent GB-1512011-A (GB)
Title: Digging apparatus
IPC: E02F9/02
Filed: 1974-04-27
Abstract: 1512011 Mole plough E S THORNTON and K A GARNETT [trading as THORNTON & GARNETT] 14 April 1975 [27 April 1974] 18541/74 Heading A1B The mole plough 7 of a mobile digging apparatus is connected by a pivoted beam 13 and a pivoted jib 10 to a sub-frame 16 mounted for pivotal movement about an axis fore and aft of a towing vehicle 5. A ram 18 controls the pivotal movement of the subframe 16 about shafts 17 during digging, so as to maintain the mole plough 7 in a constant attitude with respect to the vertical plane containing the fore and aft axis, independently of transverse tilting of the vehicle 5. A second ram 12 is operable to control the digging depth by pivoting the beam 13 relative to the jib 10. A third ram 14 may be used to elevate the jib 10 and plough 7 for transport purposes. A sighting device 22 may be provided to enable the driver to detect and compensate for tilting in both longitudinal and transverse directions during a digging operation. Alternatively, tilt compensation can be effected by an automatic system controlling rams 18 and 12. The drivers seat 30 and control console 16a may be connected to a parallelogram linkage in such a way that the seat is maintained in a substantially horizontal position when it is raised and lowered.
Patent GB-458802-A (GB)
Title: Manufacture of felt
IPC: D04H1/4266
Filed: 1935-06-28
Abstract: 458,802. Felt. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany) June 28, 1935, No. 18578. [Class 42 (ii)] Felt is made from animal fibres (wool, hair, &c.,) and artificial fibres made from polymerization products of organic vinyl compounds, e.g. a polyvinyl ester, an after-chlorinated polyvinyl chloride, or a polyacrylic ester.
Patent GB-1170886-A (GB)
Title: Improvements in Hydraulic Couplings.
IPC: F16D33/02
Filed: 1968-04-19
Abstract: 1,170,886. Hydraulic couplings. SOC. ANON. FRANCAISE DU FERODO. 19 April, 1968 [20 April, 1967], No. 18708/68. Heading F2C. In an hydraulic coupling as described in Specification 1,146,840 in which the inner ends of the blades 11 terminate at an annular flow separating member 14, one end of which is spaced from the inner surface 17 of the coupling element to form an annular radial flow passage 18, the member 14 is axially adjustable to vary the area of the passage 18. As shown, member 14 is slidably mounted on a hub sleeve 22 and is provided with a series of lugs 23, each provided with an adjusting screw 32 with an external control knob 35 and lock-nut 34.
Patent GB-942140-A (GB)
Title: Improvements in or relating to apparatus for and a method of electric butt welding of crankshafts
IPC: B23K11/04
Filed: 1960-05-26
Abstract: 942,140. Making crank-shafts; welding by pressure. THEODOR WUPPERMANN G.m.b.H. May 26, 1960 [May 27, 1959], No. 18726/60. Headings B3A and B3R. Means for holding crank-shaft parts to be welded in an electric butt welding machine having two relatively movable parts comprises a hollow member, open at one end and having a bearing in the other end for a crank-shaft journal, forming a clamping device for one of the work parts and being fixable to one of the apparatus parts and two different clamping devices for the other work part adapted to be fixed selectively to the other apparatus part to be used individually as required. On the fixed platen of a flash-butt machine two hydraulically operated or spindle driven clamping devices 1, 2 are fixed having clamping jaws 5, 6 which clamp an angular positioning device 9. The device 9 includes a plate 10 on which is clamped by grooved steel jaws a crank-shaft web 11 having a centring spigot 12 opposite half a shaft journal and a crank pin half 13 offset from the centre of the plate 10 mounted between two parallel bars. The plate 10 is rotatable to a required angular position by a motor driven worm 15. Two hydraulically operated or spindle driven devices 3, 4 are mounted on the movable platen and jaws 7, 8 clamp a semi-cylindrical trough shaped member 17 on which is clamped a web 18 having a centring spigot 19 opposite the shaft journal. In operation the webs 11 and 18 are clamped and by means of the worm 15 the web 11 is rotated into its desired angular relationship with web 18. Copper electrodes 20-23 connected to a transformer are pressed against the workpieces by cylinders 24-27 and the shaft journals are welded. The upset and centring spigots are machined off subsequently. After all the shaft journals have been welded the device 9 is replaced by a short semi-cylindrical trough shaped member 28, Fig. 3. Crank-shaft parts with their crank pin half journals to be welded are secured to the hollow members, centring pins on the hollow members engaging holes in the crank pins and the crank pin halves are welded. A bracket 29 in the member 17 supports the welded assembly.
Patent GB-246385-A (GB)
Title: Lawn tennis score register
IPC: A63B71/06
Filed: 1925-07-23
Abstract: 246,385. Hicks, A. E. July 23, 1925. Scoring-apparatus. - A disc D, which may have a raised centre, is provided with a freely-pivoted arrow A having a spigot on its underside engaging with any one of a series of holes placed in alignment with a series of lawn tennis scores marked round the disc. Holes H<1>, H<2>, H<3> are provided for the attachment of the device to the handle of a racket so that the player is able to score each point as it is played. Specification 18209/08 is referred to.
Patent GB-666658-A (GB)
Title: Improvements in and relating to margin gluing machines
IPC: B05C1/08
Filed: 1949-07-15
Abstract: <PICT:0666658/III/1> <PICT:0666658/III/2> <PICT:0666658/III/3> <PICT:0666658/III/4> A gluing machines or the like comprising a support, a glue tank, a tank roller mounted on said tank and positioned therein, a feed roller, a glue-applying roller normally in contact with said tank roller, means for pivotally mounting said feed roller on said support above said glue-applying roller for movement away from said last-named roller, means for pivotally mounting one end of said tank on said support, and means on said support for adjusting the height of the other end of said tank to adjust the tank roller with respect to said glue-applying roller.  Referring to the drawings, glue from tank 62 is transferred to gluing roller 50 via roller 56 and hence to the sheet of material 52 passing between roller 50 and feed rollers 46 and 48.  Tank 62 is resiliently supported by spring 72 carrying squared end 74 of bar 68 on which rests the leg 66 of the tank-modified method of support is shown in selfexplanatory Fig. 7.  The other end of the tank is supported on eccentric member 80 which can be rocked by means of handle 88 and quadrant 86, thus raising and lowering the tank.  The bearings on the shafts of the feed rollers and the feed roller pinions are carried in a bracket 96 supported on one end of lever means comprising arm 98 which is adjustably fixed in sockets 102 and 104, thus allowing exact positioning of the feed rollers, the positions of which with regard to the roller 50 can then be regulated by screw 108.